In Photos: Rare Pocket Shark Discovered

Scientists have identified a pocket shark that was collected from the Gulf of Mexico, only the second specimen in this genus ever reported, they say. Here are images of the teensy shark. [Read the full story on the Gulf pocket shark]

Little guy

Scientists with the National Oceanic and Atmospheric Administration collected the pocket shark specimen in 2010 in the Gulf of Mexico offshore Louisiana. They pulled it up from the deep sea, though it was dead when they went to sort it from the rest of the catch. (Credit: Fishwatch.gov)

Mysterious orifice

The Gulf pocket shark sported a pocket gland with a slit-like opening just above the pectoral fin. Scientists aren't sure the function of this gland, though they've suggested perhaps it secretes pheromones for mate attraction or it releases a luminous fluid that could be used to attract mates or prey, or even to elude predators. (Credit J. Wicker, NOAA/NMFS/SEFSC/Miami Laboratory)

The shark is teensy, measuring some 5 inches (13 centimeters) long and weighing a mere half ounce (14.6 grams), the researchers reported online April 22 in the journal Zootaxa. (Credit: M. Doosey/Tulane University)

Rare find

Mark Grace, of NOAA Fisheries' Pascagoula, Mississippi, Laboratory, said the reason this is only the second specimen of a pocket shark known has to do with both the shark's rarity and that it is difficult to catch in the deep sea with the typical survey gear. He added, in an email to Live Science: "We have an interest to expand our knowledge of this shark and other associated fauna and will take advantage of any opportunities to further our research." (Credit: M. Grace/NOAA/NMFS/SEFSC/Mississippi Laboratories)